This compiler warning is generated if it is possible for the value of sRESULT to be undefined at the end of a macro.

 

In the example below, sResult is undefined if the function HolidayOfListOnDate returns false.

var
begin
    if HolidayOfListOnDate('a', n_TokenDate)
        sRESULT = EvalToken(n_TokenDate, s_TokenRoot)
    endif
end

Usually this type of warning occurs using branching without specifying what happens in the else case.

 

There are 2 way to address this warning, using the above example:

var
begin
    bRESULT = HolidayOfListOnDate('a', n_TokenDate)  
    if HolidayOfListOnDate('a', n_TokenDate)
          sRESULT = EvalToken(n_TokenDate, s_TokenRoot)
    else
          sRESULT = ''
    endif
end

or alternatively

var
begin
   sRESULT = ''
   if HolidayOfListOnDate('a', n_TokenDate)
       sRESULT = EvalToken(n_TokenDate, s_TokenRoot)
   endif
end

Note that you should also include an else statement in switch statements.

 

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Topic 110123, last updated on 18-Apr-2020